Having this occur quite regularly on imported geometry, the data originates from Rhino and I have imported as both SAT body objects and meshed obj but still the same issue.The artifacts do not occur in Vray or Octane when tested, I have attached examples and it mostly occurs on tight radii of surfaces that were split with a detail (when NURBS).

Has anyone a method to do this, I have been around in circles trying to find a good solution to get Rhino Nurbs data into a high quality quad mesh for UVW unwrapping in Max. There are always trimmed surfaces so T-Splines as an intermediate is out of the question, closest solution I have is to convert to N-gons mesh in MOI from Rhino and then to Max as obj, far from perfect though. Would love to know if anyone has a solution??